University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Resolvent-inspired flow control of turbulent flows

Resolvent-inspired flow control of turbulent flows

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact nobody.

TURW04 - Wall-bounded turbulence: beyond current boundaries

Resolvent analysis reveals the harmonic relations between the forcing inputs and response outputs with respect to a base flow.  By combining our understanding of the baseline flow physics and the resolvent mode characteristics, effective and efficient flow control strategies can be developed to alter the time-average flows.  This approach provides us with a physics-driven flow control method, without having to resort to expensive parametric computational and experimental studies.  We also discuss our recent efforts in extending the traditional resolvent analysis to (1) incorporate randomized numerical linear algebra to enable examining higher-Reynolds number turbulent flows; (2) establish a sparsity-promoting formulation to determine the optimal actuator location and the forcing variable; and (3) integrate network broadcast analysis into the resolvent formulation to study time-varying base flows.  In this talk, we demonstrate the use of these resolvent analysis techniques for examples of actively controlling turbulent separated flow over a NACA 0012 airfoil, high-speed open cavity flow, and isotropic turbulence. 

This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2022 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity